diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 1e87106..452e3b1 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -10,7 +10,7 @@ FROM archlinux@sha256:a10e51dd0694d6c4142754e9d06cbce7baf91ace8031a30df37064d109
 RUN pacman -Syyu --noconfirm \
     && pacman -Syyu --noconfirm git less vim sudo python-pip wget which pkgconf \
     && pacman -Syyu --noconfirm cmake make gcc ninja meson shellcheck \
-    && pacman -Syyu --noconfirm gtk4 gtkmm-4.0 boost spdlog fmt libxml++-5.0
+    && pacman -Syyu --noconfirm gtk4 gtkmm-4.0 boost spdlog fmt libxml++-5.0 gtest
 
 # Create a non-root user 'dev'
 RUN useradd -ms /bin/bash dev \
@@ -38,6 +38,7 @@ ADD https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VER}/L
 # Create the LLVM directory and extract only binaries into it
 RUN sudo mkdir -p /home/LLVM-${LLVM_VER}
 RUN sudo tar -xJf /home/artifacts/LLVM-${LLVM_VER}-Linux-X64.tar.xz -C /home/LLVM-${LLVM_VER} --strip-components=1 \
+    LLVM-${LLVM_VER}-Linux-X64/bin/clangd                   \
     LLVM-${LLVM_VER}-Linux-X64/bin/clang-19                 \
     LLVM-${LLVM_VER}-Linux-X64/bin/clang                    \
     LLVM-${LLVM_VER}-Linux-X64/bin/clang++                  \
diff --git a/.forgejo/workflows/pr_check.yaml b/.forgejo/workflows/pr_check.yaml
index df57c81..294d6e4 100644
--- a/.forgejo/workflows/pr_check.yaml
+++ b/.forgejo/workflows/pr_check.yaml
@@ -120,6 +120,8 @@ jobs:
           echo "No clang-format violations detected!"
 
       - name: GCC build
+        id: gcc_build
+        continue-on-error: true
         run: |
           mkdir -p ${{ github.workspace }}/build_gcc
           cmake -Wno-dev \
@@ -133,28 +135,51 @@ jobs:
           cmake --build ${{ github.workspace }}/build_gcc --parallel `nproc`
 
       - name: GCC unit tests
+        id: gcc_unit_tests
+        continue-on-error: true
         run: |
           cd ${{ github.workspace }}/build_gcc
           ./larra_xmpp_tests
 
+      - name: Clang build (only configuring)
+        id: clang_build
+        continue-on-error: true
+        run: |
+          export LLVM_VER=19.1.1
+          export PATH="/home/LLVM-${LLVM_VER}/bin:${PATH}"
+          mkdir -p ${{ github.workspace }}/build_clang
+
+          cmake -Wno-dev                           \
+            -DCMAKE_C_COMPILER=clang               \
+            -DCMAKE_CXX_COMPILER=clang++           \
+            -S ${{ github.workspace }}             \
+            -B ${{ github.workspace }}/build_clang \
+            -GNinja -DCMAKE_BUILD_TYPE=Release     \
+            -DENABLE_EXAMPLES=ON                   \
+            -DENABLE_TESTS=ON                      \
+            -DCMAKE_CXX_FLAGS="-stdlib=libc++ -I/home/LLVM-${LLVM_VER}/include/c++/v1 -fno-modules"
+
+          echo "::group::compile_commands.json content"
+          cat ${{ github.workspace }}/build_clang/compile_commands.json
+          echo "::endgroup::"
+
+          sed -i 's|@.*\.modmap||' ${{ github.workspace }}/build_clang/compile_commands.json
+
       - name: Check clang-tidy
+        id: clang_tidy
+        continue-on-error: true
         run: |
           export LLVM_VER=19.1.1
           export PATH="/home/LLVM-${LLVM_VER}/bin:${PATH}"
           cd ${{ github.workspace }}
 
-          sed -i 's|/usr/sbin/g++|/home/LLVM-19.1.1/bin/clang++ -stdlib=libc++ -I/home/LLVM-${LLVM_VER}/include/c++/v1|' build_gcc/compile_commands.json
-          sed -i 's|-fdeps-format=p1689r5||' build_gcc/compile_commands.json
-          sed -i 's|-fmodules-ts||' build_gcc/compile_commands.json
-          sed -i 's|-fmodule-mapper=.*\.modmap||' build_gcc/compile_commands.json
-
           wget https://raw.githubusercontent.com/llvm/llvm-project/refs/heads/main/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
           python run-clang-tidy.py                           \
             -warnings-as-errors=*                            \
             -use-color                                       \
             -exclude-header-filter .*build.*                 \
             -header-filter .hpp                              \
-            -p ${{ github.workspace }}/build_gcc/            \
+            -p ${{ github.workspace }}/build_clang/          \
             -config-file ${{ github.workspace }}/.clang-tidy \
             \
             ${{ github.workspace }}/examples \
@@ -163,22 +188,9 @@ jobs:
 
           echo "No clang-tidy violations detected!"
 
-      #- name: Clang build with -fsanitize=address
-      #  run: |
-      #    export LLVM_VER=19.1.1
-      #    export PATH="/home/LLVM-${LLVM_VER}/bin:${PATH}"
-      #    mkdir -p ${{ github.workspace }}/build_clang
-      #    cmake -Wno-dev                           \
-      #      -DCMAKE_C_COMPILER=clang               \
-      #      -DCMAKE_CXX_COMPILER=clang++           \
-      #      -S ${{ github.workspace }}             \
-      #      -B ${{ github.workspace }}/build_clang \
-      #      -GNinja -DCMAKE_BUILD_TYPE=Release     \
-      #      -DENABLE_EXAMPLES=ON                   \
-      #      -DENABLE_TESTS=ON                      \
-      #      -DCMAKE_CXX_FLAGS="-stdlib=libc++ -I/home/LLVM-${LLVM_VER}/include/c++/v1 -fno-omit-frame-pointer -g -fsanitize=address,undefined,leak,function,nullability,vptr" \
-      #      -DCMAKE_EXE_LINKER_FLAGS="-L/home/LLVM-${LLVM_VER}/lib/ -Wl,-rpath,/home/LLVM-${LLVM_VER}/lib -lc++ -lc++abi -lm -lc -lgcc_s -lgcc -fno-omit-frame-pointer -g  -fsanitize=address,undefined,leak,function,nullability,vptr"
-      #    cmake --build ${{ github.workspace }}/build_clang --parallel `nproc`
+      - name: Check on failures
+        if: steps.gcc_build.outcome != 'success' || steps.gcc_unit_tests.outcome != 'success' || steps.clang_build.outcome != 'success' || steps.clang_tidy.outcome != 'success'
+        run: exit 1
       
       #- name: Clang unit tests with -fsanitize=address
       #  run: |